Solve for z
z\leq 4
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3z-20\leq -8
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
3z\leq -8+20
Add 20 to both sides.
3z\leq 12
Add -8 and 20 to get 12.
z\leq \frac{12}{3}
Divide both sides by 3. Since 3 is positive, the inequality direction remains the same.
z\leq 4
Divide 12 by 3 to get 4.
Examples
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Matrix
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Simultaneous equation
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Integration
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Limits
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